Rome and the limits of empire Hadrian's Wall：Rome and the limits of empire Britain and the aftermath of empire Life at the edge of empire Liberalism and the limits of justice Tarzan and the lost empire Contingency and the limits of history : Mapping the end of empire 帝国日落：Britain and the aftermath of empire 哈德良长城：罗马帝国的荣光与文明世界的尽头：Rome and the limits of empire